⑴What did you do yesterday?            A. Over the Internet.

⑵What does your uncle do?               B. Four tons.

⑶How heavy is the elephant?             C. I climbed mountains.

⑷How tall is he?                                  D. Interesting.

⑸What do you think of the book?      E. He's a postman.

⑹How do you know that?                   F. 170 cm.